Tractor



s. B. wlkNN Dec. 8 1925.

TRACTOR Fild Aug. 11. l1924 zlsneets-sheet 1 H www Renew Dec; s., 1925.1,564,740

S. B. WINN TRACTOR -Filed Aug. 11, 1924v 2 sheets-sheet 2 @H0111 upBunnud Du a 1925.

SIDNEY' WINN, 0F LAPEER, 'HICHIGNF frnac'ron. i -l 'To #may concemfl Beit known that I, SIDNEY B. WINN, 'a

citizen of the United States, residing at Lap'eer, in the county o fLapeer and btate of Michigan, have invented certain vnew and usefulimprovements in Tractors, 0I' which 'the following is a specilication,reference being had therein to the accompanying drawings. f

'lhis invention h as reference to motor vehicles, and more particularlyto those of the tractor type intended i'or hauling vheavy loads 'ontrailers or attachments applied yor coupled to the tractor. ln certaintypes oi `motor vehicles or tractors the inertia of the load of thelirst motion or the driving wheels has the eii'ect 0I raising theviorward partl of the vehicle oiten to such an extent that the frontwheels are liited fromthe ground, this eti'ect being particularlynoticevable in'vehicles or tractors oi' short wheel base and. beingaggravated by the passage "of the vehicie over rough or undulatingground. 'Naturally this actionv is' most undesirable and 'quite oftendangerous as it `materially diminishes and in some respects vrendersentirely impossible the control of a vehicle,l as well as throwingundesirable strains upon parts of the vehicle or upon a trailerattachment which vmay be secured thereto. lt is, therefore, an object ofthis invention toprovide ior the counteracting of this peculiarity in amotor vehicle in ay simple and eliicient manner, and a still iurtherobject is to obtain a very desirable resiliency in the vehicle at thesame time.

It is also the purpose 0I this invention to provide a novel chassisarrangement in such a vehicle, wherein the chassis is transverselydivided and the separated parts connected in a manner permittingvertical flexing of the said parts with respect to -one another; and

afurther obfject is to pr`ovide for the ver' tically 'iiexible"connecting together of front...

and rearsections of the chassis together with means yieldably resisting`the flexion l of the said chassis about the connection.`

A still further object is to provide a vertically flexible "attachmentfor connecting' the Vfront and rear parts of a divided chassis togetherand damping means ieldably resisting the flexion .of 'said attac ment.llStill further objects subsidiary to or from the aforesaid objects, orfrom the tractor chassis;

Application mea mgm 11, i924. `semi No. varate;

the construction or operation of the invention as it may be carried intoeilect, will become apparent' as the said invention is hereinafterfurther disclosed.

In carrying thesaid inventionf into effect 1` may provide for thetransverse division 0 vertical movement about the center -part of v thevehicle may take place under the iniiuence of forces actingperpendicular to thev chassis. All ofwhich is more particularlydescribed and ascertained hereinafter by way of example having referenceto the accompanying drawings, 'wherein- Figure l is an elevation partlybroken away of a tractor embodying the said invention; i

' Figure 2 is a broken plan View of part of Figure 3 is. a similar Viewto Figure 1 illustrating a modified arrangement;

Figurefl is a' similar View to Figure 2 .-i11ustrating such modiiiedarrangement;

- Figure 5 isa vdiagrammatic View ofthe chassis showing thetwo parts ofthe chassis in normal relation v i Figure 6 isa similar view to Figure 5illustrating the upward vertical flexion of the chassis under theinfluence of -a corl respondingly ap lied "force, and Figure-7 is a `urther diagrammatic view illustrating vthe opposite flexion of thechassis.

Similar characters ofr reference indicate drawing.

For the purpose of simplicity the invention is illustrated 'as being,applied to a .standard make of tractor although it will be obvious thatit may be incorporated 1n a specially designed tractor or-in one of anyother make the chassis of which is'capable of 10o similar parts in theseveral figures of the respeetivelyyasshown' in Figures 1 and 2 yes `horizontal alinement, downward flexion bethe upper ear to whichattention is being first directed.

The extension' 7 has formed thefeonK rearwardly projectig members 9 whih overlaps:A j and are hingedly` connected to (in projecting members 10on the extension 8- hy pintles 11and'both the members 9 trui,l themembers-'10 areprovided. also with upperl rwardly and lower ear pieces12 and 13, respectively; 14: being transverse rods extending betweenieces of each extension' and 15 rods extend lower ear pieces. These rodstend to relieve lateral strain on the extensions 9 and 10 to someextent, and also serve for the reception of the terminals of springs 16extending A l longitudinally of the chassis between the earpieces of thetwo extensions and' similar sprlngs 17 extending between the lower ear Ypieces.

@The hinged connection of the extensions of the chassis admits of theiieXion of the said chassis upwardly or downwardl and the springs" 16and 17 resist such exion tending `to maintain'the chassis in normal ingonly possible by the yieldingof ,the

lower springs vand the upper e'xion by the yielding of the uppersprings, as indicated in Figures 7 and (j, respectively, Figure .5

indicating the normal alinement.

The transmission shaft is shownas being extended by an intermediatesplined shaft 18 disposed between two .universal joints 19 and 20 toextend the driving or ropello'r, shaft upon the extension of the c assisin' `the manner described.

In practice, particularly with tractors of short wheel base, the firstmotion of the tractorv actuating Vabout the rear axle thereolc exerts aforce tendine to raise the forward end of the tractor'fcrom the ground,this quite often becoming eectivc pirlcularly when the tractor ishauling a heavy load or when the nature of the 'ground is such that ittends' to assist in such raising by resisting the progression of theforward wheels. This peculiar-it .is sometimes so exaggerated that theorward wheels will remain suspended out of contact with the ground forconsiderable intervals, preventing" the steering of the tractor andotherwise interfering with. its proper control as well as throwingexcessive strains upon the rear directed@ on the said ing similarlybetween the i meerde axle, chassis of the vehicle or upon connectionswhich may existtherebetween-and fa trailer which may be cou`rlledthereto.

f By the embodiment of t is invention in such a vehicle, 'the edect ofthis force is that indicated in Figure 6 of the drawin s wherein Ythechassis 'is flexed upward against resistance of Ithe springs 16 whichlprevent its taking place' to an undesirable extentgfvthe result beingthestorage of energy -in theichassis which energy is concentrated L ontheaxle of the front 'wheels tending to overcome the inertial in theforward part of Vthe vehicle and ensurex its eventualy progression alongthe-roadwa a force also being l ont axle`and maintaining the frontwheels inzcontact with the said roadway during the lifting etiect of thefirstlv motion." y :The ensui' progression of the ront'wheeis, as a resut of the 4force of stored. energy, will be somewhat greater than that:of the rear wheels iso' that the chassisv willVv 'assume its-normalalinement, Figure 5,v

and'in the event of forces acting upwardly against-the front or the rearaxles, or of the Vthat the arrangement described adds to the generalresiliency of the chassis relieving bending strains therein and addingto the comfort of the operator. Generally speelting,mostvof the forcesyoperating vertically ofthe chassis will be transmitted to the noreiiexactio'n kforwarding the appliczitionof f springs 16 and 17 'andthereby absorbed and as a result the rsuspension of the engine,transmission and gearing is accordingly improved.y i f y It is preferredthat'the. arrangement in corporating the flexible intermediate con-,nectionin. thechassis be 'such' as that :ii-p` lustratedwhereiIgreaterlength is given to the chassis 'when normally 1t is civ-short inresisting the tendency ofthe forward part of the chassis to be raised inthemannerre-,vl erred'to res 'e mi frei and sevillanas.'

es of extensions, the

.wheel base, such greater. length also assisting not overlap but are{.connectedby flexible' vhinge members 25 corresponding to the pintlesX11, which hin e members are controlled 1n their action y upper leafsprings 26 corresponding to the rlng's 16 and also leaf springs 27correspon ing to the s Arings 1T. The action issimilar tothat of tie arf rangement shownin Figures 1 and 2, both of t e said arrangements beincharacterized by the fact that thefront an rear sections of the chassisare hingedly coupled together and rovded'with resilient means dampingthe genion ,of the chassis. .The suggested device'may be readily in-

